. >> reporter: a new grass roots it group sent a delegation to washington tuesday to meet with the brady campaign to prevent gun violence and families of victims of the 1999 shooting at columbine high school. >> these people here before you because they refuse to be statistics. they don't want it to happen to the rest of you. >> reporter: more details have emerged. connecticut's medical examiner says nancy lanza was shot in the head four times while she slept. adam lanza is believed to have shot himself in the head. in newtown, connecticut. >> new information now from the nra, the national rifle association broke its silence with a statement about the killings. the group said that nra members were quote, shocked, saddened and heartbroken by the news of the horrific and senseless murders. the nra has said it's offering meaningful contributions to make sure this never happens again. >> bay area state senator introduced a bill that would close major loopholes in california's assault weapons ban. the bill is similar to one last year that prohibits semiautomatic weapons. it will require yearl